Вычислите 1/2 * 5/6; 4*5/9; 1 1/3 * 2 1/4; 2 1/2 * 2/5; 8/9*3/5; 4/9 * 2/3;
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1/2 * 5/6 = 5/12 4/3 * 9/4 = 3 5/2 * 2/5 = 1 8/9 * 3/5 = 8/15 4/9 * 2/3 = 8/27